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Set default value to 0 for total_max_threads parameter. Code style cleanup.

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This commit is contained in:
Roman Vasin 2022-05-24 18:40:45 +03:00
parent e4a58fcff6
commit 2491213166
3 changed files with 7 additions and 7 deletions
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6
docs/en/operations/server-configuration-parameters/settings.md
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@ -703,12 +703,12 @@ On hosts with low RAM and swap, you possibly need setting `max_server_memory_usa
- [max_server_memory_usage](#max_server_memory_usage)
## total_max_threads {#total-max-threads}
The maximum number of query processing threads, excluding threads for retrieving data from remote servers, allowed to run all queries. This is not a hard limit. In case if the limit is reached the query will still get one thread to run.
The maximum number of query processing threads, excluding threads for retrieving data from remote servers, allowed to run all queries. This is not a hard limit. In case if the limit is reached the query will still get one thread to run.
Possible values:
- Positive integer.
- Positive integer.
- 0 — No limit.
- -1 — The parameter is initialized by number of logical cores multiplies by 3. Which is a good heuristic for CPU-bound tasks.
- -1 — The parameter is initialized by number of logical cores multiplies by 3. Which is a good heuristic for CPU-bound tasks.
Default value: `0`.

4
programs/server/config.xml
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@ -274,8 +274,8 @@
For value equals to -1 this parameter is initialized by number of logical cores multiplies by 3.
Which is a good heuristic for CPU-bound tasks.
-->
<total_max_threads>-1</total_max_threads>
<total_max_threads>0</total_max_threads>
<!-- Maximum number of concurrent queries. -->
<max_concurrent_queries>100</max_concurrent_queries>

4
tests/queries/0_stateless/02015_global_in_threads.sh
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@ -4,6 +4,6 @@ CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CURDIR"/../shell_config.sh
${CLICKHOUSE_CLIENT} --log_queries=1 --max_threads=6 --query_id "2015_${CLICKHOUSE_DATABASE}_query" -q "select count() from remote('127.0.0.{2,3}', numbers(10)) where number global in (select number % 5 from numbers_mt(1000000))"
${CLICKHOUSE_CLIENT} --log_queries=1 --max_threads=32 --query_id "2015_${CLICKHOUSE_DATABASE}_query" -q "select count() from remote('127.0.0.{2,3}', numbers(10)) where number global in (select number % 5 from numbers_mt(1000000))"
${CLICKHOUSE_CLIENT} -q "system flush logs"
${CLICKHOUSE_CLIENT} -q "select length(thread_ids) >= 6 from system.query_log where event_date >= yesterday() and query_id = '2015_${CLICKHOUSE_DATABASE}_query' and type = 'QueryFinish' and current_database = currentDatabase()"
${CLICKHOUSE_CLIENT} -q "select length(thread_ids) >= 32 from system.query_log where event_date >= yesterday() and query_id = '2015_${CLICKHOUSE_DATABASE}_query' and type = 'QueryFinish' and current_database = currentDatabase()"